Queer and postcolonial theologies are meant to fill the public space and to strengthen the democratic space. These are, indeed, some of their main tasks. Yet, for this to be possible, the various theologies have to analyse the way in which they produce knowledge and truth. Nowadays, neuroscience is becoming an appropriate way to consider the human being from another perspective, both on the individual and social level. Neurobiology clearly shows that our behaviour and our moral, ethical and religious convictions are not only determined by our sociocultural structures, but also by our neuronal structures. Therefore, with the insights of neurosciences and the Christian classical theology of the concept of 'subject' we should question the epistemic pillars sustaining our perception of reality, and at the same time try to think of the possibility of making each and every human life better.